Skew arch support



Aug. 8, 1950 H. L. M FEATERS 2,5

SKEW ARCH SUPPORT Filed June 20, 1945 6 Sheets-Sheet 1 #7 s ATTORNEY sH. L. MCFEATERS 2,518,352

SKEW ARCH SUPPORT Filed June 20. 1945 6 Sheets-Sheet 2 Aug. 8, 1950Filed June 20. 1945 Aug. 8, 1950 H. L. MGFEATERS ,5

SKEW ARCH SUPPORT Filed June 20. 1945 6 Sheets-Sheet 4 IIz ENTOR 41'Tusk-w W WM H l ATTORNEYS g- 1950 H. L. MOFEATERS 2,518,352

SKEW ARCH SUPPORT Filed June 20. 1945 6 Sheets-Sheet 5 x L W 7, Q 1 g tBY LZ M ATTORNEYS Aug. 8, 1950 H. MCFEATERS SKEW ARCH SUPPORT 6Sheets-Sheet 6 Filed June 20, 1945 f I-NV NTOR #1 ATTORNEYS PatentedAug. 8, 1950 UNITED. STATES PATENT OFFICE SKEW ARCH SUPPORT Harry. L.McFeaters, New Castle, Pa.,assignor to Pennsylvania EngineeringCorporation, a corporati on of Pennsylvania Application June 20, 1945,-serial No. 600,493 7 Claims. (01. 110-99) '.;'Ihis invention relates toinclined segmental arches and moreparticularly to means for supportingthe inclined segmental roof arches of the ports of the hearth anduptakes of tilting open hearth furnaces.

.In tilting open hearth furnaces, the end of each hearth port isseparated or spaced from the adjacent end of the cooperating port of oneof the regenerator uptakes. These port ends are protected by watercooled chills which are usually hollow metal members secured to thesteel framework of the hearth and regenerators respectively forprotecting the outer ends of the port structures. Spaces are leftbetween the outer faces of adjacent chills so that the furnace hearthcan be freely tilted between the ports ofthe regenerator uptakes. lPrior to this invention, it has been customary to support the skewbricks for the port roof arches of tilting open hearth furnaces by heavysteel channels; the channels for the hearth ports being secured to thehearth framework immediately below and in position to support the endsof the roof arches and those for the uptake ports to the framework ofthe regenerators immediately below and in position to support the endsof the regenerator roof arches.

Since these roof arches are usually inclined, it has been customary toincline these channels the webs standing vertically) and to stack theskewback bricks for the different courses of the arches within thechannels and on the lower flanges, with the backs of the bricks incontact with the webs of the channelsand with skewback bricks for thelowest course of each arch resting against the adjacent chill for suchport end. Since the chills take the thrust due to the inclination ofthearch there is a tendency for the stack of skewback bricks to slidedown the inclined. channels. The chills are hollow, are usuallymade upof plate sections welded together, and do not provide satisfactory endabutments for heavy inclined arches. An object of this invention is toproduce improved supports for the ends. of inclined segmental arches.

Another object is to. produce. improved sup- .ports for the ends of theinclined roof arches of the ports of tilting open hearth furnacesemploying water cooled chills for the port ends.

A further object is to produce a pair of metal members for so supportingthe ends of an inclined skew arch that each course of such arch issupported independently of the other courses and receives no, end thrustfrom the courses thereabove. V 1

A further object is to produce a pair of metal members for independentlysupporting the courses of an inclined skew arch.

These and other objects I attain by means of the structure described inthe specification and illustrated in the drawings accompanying andforming part of this application.

In the drawings:

Figure l is an isometric perspective of a support member of thisinvention for supporting one end of a nine course inclined segmentalarch;

; Fig. 2 is a view similar to Fig. 1, but in this view the member isadapted to support one end of an inclined segmental arch comprisingseventeen courses;

Fig. 3 is a fragmentary View in side elevation ofthe port roof at oneend of the hearth of a tilting open hearth furnace and the roof of thece-operating uptake port of the furnace regenerator supported by meansembodying this invention. This view by dot and dash lines shows portionsof the furnace framework and one of the charging ports of the hearth,and illustrates the use of the support of Fig. 1 in supporting onehearth roof arch; the back of the support of Fig. 1- being shown. Thisview also illustrates the use of the support of Fig. 2 in supporting theroof of the regenerator uptake port co-operating with such hearth port;the view shows the back of the support of Fig. 2;

Fig. {l is a top plan View of the near half of the structure of Fig. 3;the furnace framework shown by dot and dash lines being on the oppositeside of the furnace from that shown in Fig.

. Fig. 5 is an isometric perspective of the near half of the structureof Fig. 3 looking in the direction of the arrow from the line V-V;

Fig. 6 is a view similar to Fig. 5 of the near half .of the structureshown in Fig. 3, looking in the direction of the arrow from line VI-VI;V Fig. 7 is a more or less diagrammatic section taken on line VII-VII ofFig. 3 and illustrates the far side of the lowest course of the roofarch of the hearth port of Fig. 3;

Fig. 8 is a view similar to Fig. 7 and illustrates a portion of the farside of the lower course of the roof port of the regenerator uptake andis taken on line VIIIVIII of Fig. 3;

"Fig. 9 is a side elevational view of a modifled form of the support ofFig. 1; and Fig. 10 is an end elevation of the support of Fig. .9showing the top and bottom courses of an arch in dash lines.

The support members of this invention are secured to the steel structureof the furnace in 3 the same manner and in the same positions as thechannels of the prior art, and are diagrammatically disclosed in Figs. 3and 4 of the drawmgs.

In Figs. 3 and 4, support members (only one being shown) for the hearthport roof arch comprising courses 2| are secured to the structuralstelwork '12 of the furnace hearth im mediately below the ends of sucharch. Sup ports 23 (only one being shown) for the port roof arch(comprising courses 24) of the regener= ator uptake are secured to thestructural steel- Work 25 of the regenerator' immediately below the endsof such arch.

Each support member 20 is generally channel shaped, and is preferablyforined as :a unitary steel casting, with the end portions 26 andextending at angles to the main or body portion thereof Within thechannel and taking the plaee r the i we'r' flange or the main or bodyporti'on, i proi/ide' a series or steps or support su e faces 28 (inthis case seven). The number of steps 61" supportsur aees' '28 crresponds to the nurnqez "of courses -24, minus the end courses; theskew bricks for the end cou ses being su ported on the lower flanges orthe angled end portions. v sup ort members so and '23 are secured in asposition, as disclosed in Figs. 3, 5 and s so if at the upper faces ofthe steps or support f's'u ces and said -1ewer 'nahges' lie in parallelo zc'mfial planes. Steps 2'8 and flanges 2"9 arid it hind horizontalsupport s'urfa'ces' ffor inde .pendently supporting the skewback bricksfor Each support 23 ror the roof arches of the ports of the'i'egenerat'or uptaks is provided with If: of support surfaces 31, sincethere are seventeen courses in each of these roof arches;

the new bricks for the upper and lower end course being supported onthelower flanges 32 33 r the angled end portions 34 and '35,

gne end oft-he tilting hearth of an open hearth while the right-handportions 0f Figs isclo'se epphsiie halves er the roof arch 0 Operating'pbrt or the regnerator upfurnace for the speetiiiely r the S e tremembers. Steps 3-4 take. Par't'ofthes'teel framework forthe hearth andregenerator and one of the charging ports '38 for the hearth are shownby not and flash in Fig. .3, this steel framework is shown eourse ofeach arch has its own horizontal "coniplementary support surfaces .forits skew bricks that i'SUICh course will produce no thrust against thenext llower course. Each course oi each arch in supportes independentlyor the other courses the for this reason, there will be no eha thrust onthe chills at the lower ends of the ports,

sliding movement in a downward direcnoh prevented by the "complementaryhofl= 4 zontal steps which support each pair of skew bricksindependently of the other pairs.

Each port roof arch, whether for the hearth or the regenerator uptake,may be a segment of the frustum of a cone or the segment of a, cylinder,but whichever type, the arch will be sloped-or inclined at an angle tothe horizontal.

In the modified form of support member of Figs. 9 and 10, steps 39extend horizontally. The supporting surface 40 of each such step isoblique and ilaas the same inclination as a Vskewbrick would have, if.employed. In other words, incliiied face 30 arse-e15 the end face of theend brick of thecour'se supported thereby in cooperation with thecomplementary surface on the support iniember for the other end of thearch. The angle or inclination of each support surface 40 differs fromthe angle or inclination of every other support surface 40 and suchangle lifiation parallels the outer end 6f theend breach course ofthearch. when the nc 7 cation of Figs. 9an'd 1-0 is employed, skew areiiriheeessary.

It will be apparent that supper-i members this invention whetherdesigned to support skewbricks oi to function without s'levi'rbri'elc'srnay be made hollow for the purpose of being water cooled. 1

Having thus described iny invention what I 'ini as new and tissue tosecure by Letters Patent is-: V

- 1911i: t ting hearth-regenerative fume-censu- 'ing each of the co'op'erat-ing ports or the hearth and regeherators roofed by an archhaving its longitudinal axis inclined to the horizontal, earnprisingmultiple contiguous courses extendin t ansveifsely of such and havingtheir lower extremities stepped, means for supporting each c' oiirse ofeach s'uch ai'ch independently of the other courses thereof such meanscomprising a pair er spaced metal inerribers secured to the ffurn estructure immediately below the lower efitrem-i s of *such'aich courses;each such mem ber "comprising a unitary structure provided with astepped series of s-upi oi't siirfaces and having its longitudinal axisinclined to the herizo'nta l, each support surface of one member of suchpair "co' opefratiiig with the complementary support surface of theother member hr seen-pair in "suppo ting an arch hoarse.- r

V H :2. A -.'structureas =deii-ned=in claim 1,- in the support suireeeethe horizontal.

' 3.- A *stiildtii-ie as defined iii-olaih'i 1, in which each metalmember is generally channel-shaped and the support 'surfa s arehorizontal.

. a. A structure as sensed "claim -1, in which th semen urfaces areinclined.

'5. structure as defined in claim '1, in which the siipportfsiirfa-ces-are inclined and arranged is p ra llel the iewer races of the endbricks oi "the arch courses to; be supported thereby.

6. Ina tilting hearthregenerativefurnacehav mg sachet thecmperating'ports of the hearth and re-generators 'iooletl by an archhaving its longitudinal axis inclined to the horizontal, comprisingihju-itiple contiguous courses extending transvei" ly er "such axis andhavin'g' "their lower extrem stepped, a pair of metal members secures; 0the furnace structure immediately beloiif't'h-e' lower extremitiesof-each such arch, each siich member "comp-rising auniiary structure"protides with a stepped eries or support surfaces a u having itslon'giti'id'inal axis inclined to the horizontal, each support surfaceor one such member co-operating with the complementary support surfaceof the other member of each pair in supporting one course of one sucharch.

7. In a tilting hearth regenerative furnace having each of theco-operating ports or the hearth and regenerators roofed by an archhaving its longitudinal axis inclined to the horizontal, comprisingmultiple contiguous courses extending transversely of such axis andhaving their lower extremities stepped, a pair of metal members securedto the furnace structure immediately below the lower extremities oi eachsuch arch, each such member comprising a unitary structure provided witha stepped series of support surfaces corresponding in number to thenumber of courses in the arch being supported; each support surface ofone such member of a pair cooperating with the complementary supportsurface of the other member of such pair in supporting one course of onesuch arch.

HARRY L. McFEATERS.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS 10 Number Name Date 951,406 Mathes Mar. 8, 19101,006,111 Maxlow Oct. 17, 1911 1,019,035 Fortune Mar. 5, 1912 1,233,554Cotton July 17, 1917 1,617,759 Jackson Feb. 15, 1927 1,683,963 DuquesneSept. 11, 1928 2,023,174 Hoiman Dec. 3, 1935

